Door-check.



A. ROSENBERG.

noon 01mm. APPLICATION FILED FEB. 24, l9 09.

Patented Oct. 19, 1909.

Guineas. WASKINGION n c.

ADOLPH ROSENBERG, OF BUFFALO, NEW YORK.

DOOR-CHECK.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed February 24, 1909. Serial No. 479,725.

To all whom it may concern:

Be it known that I, AnoLPH ROSENBERG, citizen of the United States,residing at Buflialo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Door Checks, of whichthe following is a specification.

This invention relates to locks and latches and more particularly to animproved door guard.

The object of this invention is to provide a device of this nature whichmay be employed in lieu of the chains and bolts long in common use, andwhich is of such formation as to prevent the breakage or picking of thesame by persons entering from the outside of the door.

The invention has for another object the provision of a door guard ofthis nature, which, when positioned, occupies comparatively small space;is of simple operation and one which will admit of the opening of a doorto a limited extent without the necessity of entirely releasing thesame.

A still further aim of this invention is the provision of a device ofthis character, which is of simple construction, thereby producing adevice which is applicable to doors and casings therefor of commonconstruction and one which may be produced economically.

For a full understanding of the invention and the merits thereof and toacquire a knowledge of the details of construction, reference is to behad to the following description and accompanying drawings, in which:

Figure l is a detail in section showing the guard as applied to a doorand casing; Fig. 2 is a front elevation of the hasp detached; Fig. 3discloses a top plan of the guard as applied to a door in a partiallyopen and locked position; Fig. 4 is a detail of the base plate andlocking ball carried thereby; and Fig. 5 is modification of the hasp.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters. 7

Referring to the drawings, the numeral 10 designates a plate which isprovided with a plurality of eyes 11 which are adapted to receive apintle 12 therethrough for the purpose of hingedly supporting a pair oflinks 13 which extend outwardly therefrom. The

plate 10 is adapted for engagement upon the inner face of a door casing14 and to'be engaged. upon its outer face by the edge of the door 15when in a closed position. The links 13 are provided upon their-outerfree extremities with offset eye portions 16 which are extendedoppositely and which receive studs 17 outwardly and oppositely disposedupon the edges of a hasp 18 at the inner end thereof. The portions ofthe hasp 18 which carry the studs 17 are enlarged outwardly to formflanges 20 which are adapted to register and to coact with flanges 19formed inwardly of the links 13 for the purpose of admitting of thepassage of a ball 21 therebetween, which is carried upon an outwardlyraised rib 22 formed upon a base 23, which is carried on the inner sideof the door 15. The rib 22 is adapted to slidably engage within the slotformed intermediately and longitudinally of the haspvl8 which forms acontinuation of the space interposed between the links 13 and in whichthe rib 22 is adapted to engage. WVhen the rib 22 is engagedwith thehasp 18, the same is secured in such position by means of a thumb latch24, which is pivotally and frictionally disposed upon the outer edge ofthe rib 22 at the rear end of the same. The thumb latch 24;, serves toretain the rear end of the rib 22 within the hasp 18, while the ball 21looks the forward end thereof by virtue of its engagement against theouter face of the hasp 18.

In the drawings is disclosed a slightly modified form of the inventionin which the plate 25 which is carried upon the door casing 14isprovided at its outer edge with a pintle 26 which supports the innerextremities of the arms of a hasp 27, the hasp 27 being provided withflanged portions 28 adjacent the rear or inner extremity of the same,against which the ball 21 is adapted to engage when positioned therein.This modified form of the device is adaptable to doors which are soformed and positioned within the casing, as to dispose their inner facesflush with the inner faces of the casings which are disposed thereabout.The object of this construction is to enable the operator to swing thehasp 27 backwardly against the inner face of the casing, so as toposition the same out of the way, thereby eliminating the danger of theengagement of clothes or the like thereagainst when passing through thecasing. The employment of the preferred formation above described is forthe purpose of door casings in which the doors are seated inwardly of lthe inner faces of the casings, and in order to swing the hasp 18against the inner faces of the casings, it is necessary to provide anintermediately hinged portion to engage the inner sides of the casingsto extend the hasp rearwardly or inwardly to a suflicient degree toadmit of the swinging backwardly of the same. r

The operation of the device is as follows: When the door 15 is in aclosed position the ball 21 is engaged against the outer edge of theplate and the links 18 are disposed upon the opposite sides of the rib22. The hasp 18 is swung inwardly against the door to lie in parallelwith the links 13 upon the opposite sides of the rib 22, when the thumblatch 24 is partially rotated to engage the base portion thereof againstthe outer face of the hasp 18, thereby locking the door in a closedposition. hen it is desired to open the door a slight distance only andto retain the same in a locked posit-ion, the thumb latch 24 is rotatedinto the plane of the rib 22 when the door is drawn inwardly, j whichagain causes the outward swinging of the links 13 upon the plate 10 andcauses i the sliding of the forward extremity of the rib 22 against theflanges 20 and 19 respectively to engage the ball 21 against the outerface of the hasp 18, thereby preventing the displacement of the hasp 18from the door. The ball 21 is permitted to slide the full length of theslot which is formed in the hasp 18 and to admit of the opening of thedoor 15 equal to the length of the hasp 18. \Vhen it is desired toentirely release the door the same must be brought into a closedposition in order to bring the ball 21 into engagement with the forwardedge of the plate 10 to permit of the swinging outwardly of the links 13and hasp 18, to release the ball 21 therefrom and to permit the same topass between the links 13 at their inner extremities inwardly of theflanges 20. As the plate 10 is secured upon the inner face of the casing1 1 and is secured in such a position as to admit of the positioning ofthe edge of the door thereagainst, it is readily observed that the samecan not be removed by tools from the outside of the door and therebyforms a reliable and safe lock against intruders. l

' said base The above construction admits of the base 23 and the rib 22to be made in one thickness for all forms of doors and casings so thatit is not necessary to provide different sizes of the same when it isdesired to place them upon doors which are seated inwardly of the faceof the casing. The double hinged member disclosed in Fig. 2 admits ofthe retention of the hasp 18 in parallel at all times to the base 23.

Having thus described the invention what is claimed as new is:

1. A device as specified comprising a plate, links pivotally mounted onsaid plate, a hasp carried upon the outer extremities of said links,said plate adapted for engagement upon the inner face of a door casing,a base plate disposed upon the inner face of a door adjacent the outeredge thereof in alinement with said first plate, a rib longitudinallyformed upon the outer face of said base for engagement between saidlinks and in said hasp, a ball carried upon the forward end of said ribfor engagement against the outer faces of said links and said hasp, anda thumb la'tch carried by said rib at the inner end thereof forengagement through said hasp against the outer face thereof.

2. A device as specified comprising a plate secured to a door casing,links carried by said plate in spaced relation and parallel to oneanother, a hasp mounted upon the outer extremities of said links,flanges formed in alinement on said hasp and said links, a base disposedupon the inner face of a door in alinement with said plate, a riboutwardly extended and longitudinally positioned upon for engagementthrough the said links and in said hasp, a ball formed on the outer endof said rib for engagement be tween the inner extremities of said linksinwardly of said flanges carried thereby, and a thumb latch rotatablydisposed on and in frictional engagement with the inner end of said rib,said thumb latch adapted for engagement through said hasp to engage theouter face thereof.

In testimony whereof I afiix my signature in presence of two witnesses.

ADOLPH ROSENBERG. [11. s] lVitnesses CHARLES E. Man'rznorr,

C. G. GROUMEYER.

